#ifndef AVFILTER_AVFILTER_H
#define AVFILTER_AVFILTER_H
-#define LIBAVFILTER_VERSION_MAJOR 0
-#define LIBAVFILTER_VERSION_MINOR 5
-#define LIBAVFILTER_VERSION_MICRO 1
+#include "libavutil/avutil.h"
+
+#define LIBAVFILTER_VERSION_MAJOR 1
+#define LIBAVFILTER_VERSION_MINOR 13
+#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \
*/
unsigned avfilter_version(void);
+/**
+ * Returns the libavfilter build-time configuration.
+ */
+const char *avfilter_configuration(void);
+
+/**
+ * Returns the libavfilter license.
+ */
+const char *avfilter_license(void);
+
+
typedef struct AVFilterContext AVFilterContext;
typedef struct AVFilterLink AVFilterLink;
typedef struct AVFilterPad AVFilterPad;
struct AVFilterFormats
{
unsigned format_count; ///< number of formats
- int *formats; ///< list of formats
+ enum PixelFormat *formats; ///< list of pixel formats
unsigned refcount; ///< number of references to this list
AVFilterFormats ***refs; ///< references to this list
};
/**
- * Helper function to create a list of supported formats. This is intended
- * for use in AVFilter->query_formats().
- * @param len the number of formats supported
- * @param ... a list of the supported formats
- * @return the format list, with no existing references
+ * Creates a list of supported formats. This is intended for use in
+ * AVFilter->query_formats().
+ * @param pix_fmt list of pixel formats, terminated by PIX_FMT_NONE
+ * @return the format list, with no existing references
+ */
+AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts);
+
+/**
+ * Adds pix_fmt to the list of pixel formats contained in avff.
+ *
+ * @return a non negative value in case of success, or a negative
+ * value corresponding to an AVERROR code in case of error
*/
-AVFilterFormats *avfilter_make_format_list(int len, ...);
+int avfilter_add_colorspace(AVFilterFormats *avff, enum PixelFormat pix_fmt);
/**
* Returns a list of all colorspaces supported by FFmpeg.
/**
* Callback function to get a buffer. If NULL, the filter system will
- * handle buffer requests.
+ * use avfilter_default_get_video_buffer().
*
* Input video pads only.
*/
- AVFilterPicRef *(*get_video_buffer)(AVFilterLink *link, int perms);
+ AVFilterPicRef *(*get_video_buffer)(AVFilterLink *link, int perms, int w, int h);
/**
* Callback called after the slices of a frame are completely sent. If
*
* Input video pads only.
*/
- void (*draw_slice)(AVFilterLink *link, int y, int height);
+ void (*draw_slice)(AVFilterLink *link, int y, int height, int slice_dir);
/**
* Frame poll callback. This returns the number of immediately available
/** default handler for start_frame() for video inputs */
void avfilter_default_start_frame(AVFilterLink *link, AVFilterPicRef *picref);
/** default handler for draw_slice() for video inputs */
-void avfilter_default_draw_slice(AVFilterLink *link, int y, int h);
+void avfilter_default_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
/** default handler for end_frame() for video inputs */
void avfilter_default_end_frame(AVFilterLink *link);
/** default handler for config_props() for video outputs */
int avfilter_default_config_input_link (AVFilterLink *link);
/** default handler for get_video_buffer() for video inputs */
AVFilterPicRef *avfilter_default_get_video_buffer(AVFilterLink *link,
- int perms);
+ int perms, int w, int h);
/**
* A helper for query_formats() which sets all links to the same list of
* formats. If there are no links hooked to this filter, the list of formats is
* Filter definition. This defines the pads a filter contains, and all the
* callback functions used to interact with the filter.
*/
-typedef struct
+typedef struct AVFilter
{
const char *name; ///< filter name
const AVFilterPad *inputs; ///< NULL terminated list of inputs. NULL if none
const AVFilterPad *outputs; ///< NULL terminated list of outputs. NULL if none
+
+ /**
+ * A description for the filter. You should use the
+ * NULL_IF_CONFIG_SMALL() macro to define it.
+ */
+ const char *description;
} AVFilter;
/** An instance of a filter */
* @param link the output link to the filter from which the picture will
* be requested
* @param perms the required access permissions
+ * @param w the minimum width of the buffer to allocate
+ * @param h the minimum height of the buffer to allocate
* @return A reference to the picture. This must be unreferenced with
* avfilter_unref_pic when you are finished with it.
*/
-AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms);
+AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms,
+ int w, int h);
/**
* Requests an input frame from the filter at the other end of the link.
/**
* Sends a slice to the next filter.
+ *
+ * Slices have to be provided in sequential order, either in
+ * top-bottom or bottom-top order. If slices are provided in
+ * non-sequential order the behavior of the function is undefined.
+ *
* @param link the output link over which the frame is being sent
* @param y offset in pixels from the top of the image for this slice
* @param h height of this slice in pixels
+ * @param slice_dir the assumed direction for sending slices,
+ * from the top slice to the bottom slice if the value is 1,
+ * from the bottom slice to the top slice if the value is -1,
+ * for other values the behavior of the function is undefined.
*/
-void avfilter_draw_slice(AVFilterLink *link, int y, int h);
+void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir);
-/** Initialize the filter system. Registers all builtin filters */
+/** Initializes the filter system. Registers all builtin filters. */
void avfilter_register_all(void);
-/** Uninitialize the filter system. Unregisters all filters */
+/** Uninitializes the filter system. Unregisters all filters. */
void avfilter_uninit(void);
/**
* filter can still by instantiated with avfilter_open even if it is not
* registered.
* @param filter the filter to register
+ * @return 0 if the registration was succesfull, a negative value
+ * otherwise
*/
-void avfilter_register(AVFilter *filter);
+int avfilter_register(AVFilter *filter);
/**
* Gets a filter definition matching the given name.
*/
AVFilter *avfilter_get_by_name(const char *name);
+/**
+ * If filter is NULL, returns a pointer to the first registered filter pointer,
+ * if filter is non-NULL, returns the next pointer after filter.
+ * If the returned pointer points to NULL, the last registered filter
+ * was already reached.
+ */
+AVFilter **av_filter_next(AVFilter **filter);
+
/**
* Creates a filter instance.
* @param filter the filter to create an instance of
projects / ffmpeg / blobdiff